The heightened probability will last through Tuesday as scientists estimate the probability of an earthquake as high as 7.0 or higher being triggered by the chances as 1 in 100 and as low as 1 in 3,000 on the southern San Andreas fault. The average chance for such an earthquake striking on any given week is 1 in 6,000.

Morgan Page, a geophysicist with the USGS said, “Earthquakes along the San Andreas typically occur every 300 years. There is significant stress stored on the southern end.”